<!DOCTYPE html>
<html>

<head>
    <title>调用 JavaScript 文件</title>
    <script src="cal.js"></script>
</head>

<body>
    <h1>调用JavaScript网页</h1>
    <input type="text" id="input" placeholder="在这里输入数据，空格分割值">
    <button onclick="calStanddeviation()">计算标准差</button>
</body>

</html>